Increasing OPD from search
Help users search what they want quickly
Show past searches made by the user
Show popular items searched for nearby & preferably, at this time of day
Give the user the best matches to their query
Rank top selling items in that location higher
Give the best alternatives if we can't find exactly what they want
Show related brands for the item being searched
Provide a way for users to filter results by categories / subcategories
Show top trending searches in the recent times
Complete the search term that the user is typing
Show user potential corrected suggestions to their query e.g. "Did you mean...?"
Rank as per closest string / synonym / autocorrected matches
Allow users to sort by price to find the right item they want to buy
Map colloquial names (regional / slang / event-associated) to items for easier finding
Advanced: allow users to search by voice / image
Allow users to filter by discounts, both item & ONE discounts
Give the user a way to jump into the relevant category / subcategory in case they want more / other of the same item / type of item
Autofocus on search bar & open keyboard for users to start typing immediately